diff --git a/src/ripple/app/misc/impl/ValidatorList.cpp b/src/ripple/app/misc/impl/ValidatorList.cpp
index e87ef02fe8..12bbab8ebe 100644
--- a/src/ripple/app/misc/impl/ValidatorList.cpp
+++ b/src/ripple/app/misc/impl/ValidatorList.cpp
@@ -573,7 +573,7 @@ ValidatorList::calculateMinimumQuorum (
 {
     // Only require 51% quorum for small number of validators to facilitate
     // bootstrapping a network.
-    if (nListedKeys <= 5)
+    if (nListedKeys <= 6)
         return nListedKeys/2 + 1;
 
     // The number of listed validators is increased to preserve the safety
diff --git a/src/test/app/ValidatorList_test.cpp b/src/test/app/ValidatorList_test.cpp
index 650969940f..b351370d13 100644
--- a/src/test/app/ValidatorList_test.cpp
+++ b/src/test/app/ValidatorList_test.cpp
@@ -834,8 +834,8 @@ private:
                     emptyLocalKey, cfgKeys, cfgPublishers));
                 trustedKeys->onConsensusStart (activeValidators);
                 BEAST_EXPECT(trustedKeys->quorum () ==
-                    (cfgKeys.size() <= 5) ? cfgKeys.size()/2 + 1 :
-                        cfgKeys.size() * 2/3 + 1);
+                    ((cfgKeys.size() <= 6) ? cfgKeys.size()/2 + 1 :
+                        cfgKeys.size() * 2/3 + 1));
                 for (auto const& key : activeValidators)
                     BEAST_EXPECT(trustedKeys->trusted (key));
             }
@@ -865,8 +865,8 @@ private:
                 trustedKeys->onConsensusStart (activeValidators);
 
                 BEAST_EXPECT(trustedKeys->quorum () ==
-                    (cfgKeys.size() <= 5) ? cfgKeys.size()/2 + 1 :
-                        (cfgKeys.size() + 1) * 2/3 + 1);
+                    ((cfgKeys.size() <= 6) ? cfgKeys.size()/2 + 1 :
+                        (cfgKeys.size() + 1) * 2/3 + 1));
 
                 for (auto const& key : activeValidators)
                     BEAST_EXPECT(trustedKeys->trusted (key));